Take your GLOCK to the next level with StormLake replacement barrels. The barrel is machined from certified 416R stainless steel for superior strength, durability, and accuracy. Barrels are match grade, hardened to 40- 42 HRC and cut broach rifled to shoot jacketed or lead bullets. All barrels are chambered for full case support. All GLOCK barrels are drop in and will only occasionally require modification to fit.